 /*******************************************************************************
  * Copyright (c) 2003, 2005 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/

 package org.eclipse.osgi.framework.internal.protocol.reference;

 import java.io.IOException ;
 import java.net.*;

 /**
  * URLStreamHandler for reference protocol. A reference URL is used to hold a
  * reference to a local file URL. A reference URL allows bundles to be installed
  * by reference. This means the content of the bundle will not be copied. Instead
  * the content of the bundle will be loaded from the reference location specified
  * by the reference URL. The Framework only supports reference URLs that refer
  * to a local file URL. For example: <p>
  * <pre>
  * reference:file:/eclipse/plugins/org.eclipse.myplugin_1.0.0/
  * reference:file:/eclispe/plugins/org.eclipse.mybundle_1.0.0.jar
  * </pre>
  */
 public class Handler extends URLStreamHandler {
     public Handler() {
     }

     protected URLConnection openConnection(URL url) throws IOException {
         return new ReferenceURLConnection(url);
     }

     protected void parseURL(URL url, String str, int start, int end) {
         if (end < start) {
             return;
         }
         String reference = (start < end) ? str.substring(start, end) : url.getPath();

         setURL(url, url.getProtocol(), null, -1, null, null, reference, null, null);
     }

 }

